Physics Answers

What are the two types of collision. Then give a brief and concise description.

A car of mass 2500 kg and moving at 3 m/s, northeast collides with 3800 kg car moving northwest at 2 m/s. Find their velocity, assuming that the collision is perfectly inelastic.

Car A of mass 2000kg moving at 73 km/h tries to overtake car B of mass 1250 kg moving at 60 km/h,east. Car A collides with car B. The cars stick together after collision. Find their velocity after collission.

find the fermi energy of copper by assuming that each copper atom contributes one free electron to the electron gas . the density of copper is 8.94 x 10^3kg/m^3

If your car has a mass of 894kg, how much force is required to accelerate it forward at 3.22m/s²?

Ben Geller carries a 300- N suitcase up three flights of stairs ( a height of 12.0m ) and then pushes it with a horizontal force of 60.0 N at a constant speed of 0.6 m/s for a horizontal distance of 25.0 meters , how much word does Ben do on his suitcase during this entire motion ?

Determine the resultant of the following: 9.0 N at 40°, 8.0 N at 120°, and 14.0 N at 22 0°, all

angles being measured with the positive x-axis. Use component method in finding the resultant.

what is the angular velocity of an object traveling in a circle of radius 0.75 m with a linear speed of 3.5 m/s ?

A block slides from rest from the top of an inclined plane 10 m long which is inclined 37° with

the horizontal. If the coefficient of kinetic friction is 0.30, determine how long it will take the

block to reach the bottom of the plane.

A 4.25 kg block rest on a horizontal tabletop. A cord is attached to this block, the cord passing

over a pulley at the edge of the table. At the end of the cord is hung another block weighing 7

kg. Determine the tension in the cord.